Type-writing machine.



J. C. MOLAUGHLIN. TYPE WRITING MACHINE. APPLIOATL FILED SEPT. 24, 1910.

1,021, 1 58. Patented'Mar. 26, 1912.

gfgwenl'm I STA PATENT F 1MLAUGHLINYPFIJEBSEY QLIY'IYY, NEW JERSEY, ASSIGNOR ro nmmnwoon ygnwmrnn oomrnny or NEW yonx, A COBPORATIQN or DELAWARE.

f T'YBEMii'ITINo MACHINE.

Specification of Letters Patent. Patented )Iar. 26,i112.

'- Application filed September 24, 1910. Serial No. 583,549.

Yh 'id zrhoni it in fly concern: i

' lie it known-that I. Join MoLAi'on- 1.1x. a citizen of thel'nittal States, residing in Jersey (ity. in the county of Hudson and State of Xew Jersey, have invented certain new and useful Im )rovements in TypelVriti-ng Iaehines,-ol -\v;hieh thefollowing is a specification.

This invention rel'atest'o card holders at- 10 taohable to the cylindrical platensjof typewriting iniaehines.

have' usually been"i-onstrueted of a strip of. metal arched ;to'-eonfm' m to .the 'cireumfer- Devices of this class 'ence of"the -platen' and extending along the platen, tonguesjbei ig provided tocateh over the-cart'lj; theends ofv studs-trip usuallyharing 'forlved arms to. bestl'ide'the hub .ofthe platen, with .means'to-eateh o\ er theiheads' of the platen. gBy the use of suehholdcrs, the .platen was liable:tobeeome worn or in- -dented in one. plae ,this being due to writing a lar e number of cards .t hereon.

'lhe-ohyeets of the present invention are to improve and simplify eard holders, and

to remler-them more simpleand readily at taehabl e'tothe platen. aml to lengthen the life of the platen. -The card-holding strip is-provided at opposite ends with means to catch upon any of a series of fasteners mounted'at' intervals about the peripheries 'of the respective heads of the platen. As

there are 'a number of different points at which the. card holder may be applied to .the platen. the particular point of appliea- 35 tion each time will be determined entirely by chance and with a machine in ordinary use, a great number of applications of the strip will be distribi-ited fairly uniformly at the dill'ereut points. ln this way the platen sueeessirely presents a number of dill'ereut portions of its surface to the action of the type in ivriting'on dillerent sets of cards. For this reason the wear on the platen by the type is made uniform and distri'huted substantially over its periphery.

ln-the arepmpanying drawings, ;l igu-re 1 is a perspective of a platen having the present invention applied 'themrto. ltig. 2 is an end view. Fig. 3 is a part. sectional detail view of the card holder disengaged from the platen. Fig. l is a similar view. the card holder an d platen being engaged. ljig. 5 is a detail view showing the parts dlsassembled.

A strip 1 extends the length of the platen 2 and has a series pt spring tongues 3 'to catch-"ii card 1*. b'pringy sockets t, mounted in the ends?) of/t'he strip, (which project over the usual platen heads 6 at opposite to form a head 11, \vhieh lies against the under edge of the strip around the opening to hold the shell to the plate-1. 'Said crimping also bends the open slitted edge of the shell in\\'ardl to form springy lips 12. which spread apart to admit the head of the button to the socket. The buttons 7 may he brazedt'o the platen heads; and may, if desired. project slightly above the'circum ferem-e ofthe platen (Figs. 2 and 3), so as to be. easily engaged by the sockets t which preferably extend but slightly below the under face of the strip t. lat-h head is ofsueh circumference that several such buttons 7 may be arranged aboutits periphery,v

the buttons on one head being opposite those on the other head to permit placing the card holder at diti'erentpoints aroundthe platen, whereby no one portion of the platen surface becomes unduly worn or indented by the types. The holder is removed by plaeing ones fingers beneath the overhanging ends 5 of the strip and pressing outwardly.

Having thus described my invention, I claim:

1. In a typewriting machine, in combination, a rotatable platen having a row of fastening devices at one end thereof, a second rowof fastening devices at the other end of said platen, the members of one row being'opposite the members of the other row, a detachable card-holder strip having fasteners cooperating with said fastening devices to secure the same to said platen, said fastening devices 'being separated cirrnmferentiallyon the {ace of said platen whereby successive a ppliea'tions of said strip will occur by chance atditferentpoints on the ])(*l"l]-)ll0l of said platen and distribute the strokes of the type throughout the entire eircumferenee thereof.

2. In a typewriting machine, a. rotatable against the face of said platen in combination with a detachable card-holder strip" extending longitudinally on the face of said platen, and a plurality of devices spaced apart oircumferentially on said platen for attaching said strip at aplurality of different predetermined points "on the periphery thereof, said strip being adapted for holding a card.

3. In a typewriting machine, in combinaticn, a platen having heads at -the ends thereof, a card holder strip adapted to lie laten, a lurality of fastening devices carried by said heads separated circumferentially, and fastening devices on said card-holder and adapted to snap onto said first fastening devices to secure said-cardholder onsaid platen.

4. In a typewriting machine, in combina-v JOHN C. MQLAUGHLLN. f Witnesses:

K. FRANKFORT, C. RIPLEY. 

